Internal-combustion engine



F. R. PORTER INTERNAL COMBUSTION ENGINE Dec. 14 1926. H 1,610,314

Filed Feb. 7, 1921- 'a'sneets-snee t 1 IN VEN TOR. Finley R. Porter ATTORNEY TEE.

Dec. 14, 1926. 1,610,314

F. R. PORTER INTERNAL COMBUSTION ENGINE FiledFeb. '7, 1921 Z Sheets-Sheet 2 o w o Q E 1i 5 I 3% m 2 INVENTOR. Finley R. Porter ATTORNEY 'rINLEYnroRTEa, orron r JEFFERSON, ISIEYV YORK, Assrenon we KNIGHT airmail;

Y can rArnnrsooMr NY, oscHIcAoo; LLINorsf; atoonronarro n OFDELAWAREH I IN TERN n -ooMBus'rion;inertial f'fi f'l I f Application filed real-nar 7, 19-21. serial No. 443x217.

My invention broadly comprises means'for 7 and'8. The air inlet port T'may vided with a suitable screen 13'.

subjecting the piston to the direct contact with the air being fed to the carburetor when the piston is at oneportionof its stroke whereby the double object is obtained of p I a e a groove. (3 therein will be brought into aligncooling the "piston and ofheating the air, to

V renderthe'engine more effective. a

g j invention more particularly comprises v improvements, in the construct1on;'form and the piston and in direct contact therewith when the piston is at one portion 'ofits 'Another object is to {provide the piston with a circumferential recess'intermediate its endswhich shall act to'intercept gaseousor liquid fuel that may leak by the piston-rings and the provision of means for drawing air through saidrecess 'for'thepurpose of labair serving to cool the piston and, at the same time,-t"h eatthe air thus adding mate-f "rially to the efficiency of the engine;

sorbmg or mixing with said fuel and carry- ;ing it back-to the carburetor.

arrangement ofcertain of the parts whereby the alr being fed to the carburetor iscaused t to pass transversely through the cylinder at points Where it Will be forced to pass around stroke, the piston prefe'rably'having a circumferent-ial groove which Willbe brought ports of the cylinder.

into alignmentwith' the air inlet and outlet A practical embodiment of my invention isrepresented 1n the accompanying draW-' ings, in which:

Figure I represents, 1n elevation, a portion:

ofa m'ulti-cylinder internalcombustion engineith my invention applied thereto,

Figure II is a section taken in the plane of the line II-II of Figure I, and

V Figure III is a section taken in the plane of the line III-III of Figure I. I

Thecrmkshaft casing is denoted by land 'the longitudinally arrange'd cylinders by '2.

Pistons 3 are fitted to reciprocate in. the

cylinders 2 and areconnected V to the-crank shaft 4 by the usual rods 5;

, Each piston 3 is provided "with a circum ferential groove 6 intermediate its ends Each cylinder 2' is provided with an air in- ;let' port 7 and an air outlet port 8 arranged,

.in the presentinstance, diametrically opposite each other; The air outlet port 8 is connected to the branch 9 of the intake manifold:

pipelO which leadsto the carburetor, not shown. n the present instance, I have shown the cylinder asprovided with a lin-- ing 11, the said lining having perforations 12 opposite the air inlet and outlet ports The arts are preferably so arranged that when t ;e piston 3 isat or nearthe limit of its rearwardfrnovementl, the. circumferential mentwith the =airsinlet and outletports so its-stroke to the direct action of incoming At the saine tiine any gaseous or carburetor. or intake'manifold 'I helperforated'baflies in theinlet and outletp'o'rts break the air; current up into jets and eddies, which 1 s conducive toIm'ore thorough m x ng of.

the air with the fuel elements. This results in a saving of vfuel and preventsdilution of the oil in the crank case byvliquid fuel escaping thereinto It is obvious that this invention might be appliedto engines having any number of cylinders, and to engines of various types; hence- I do not Wish to limitmyself to the particu- 1ar construction herein shown and described. 1 What I claim as new and desire to'jsecure' by LettersvPate'nt is:

1. I In an internal combustion engine, a cylinder; a piston,-a circumferential recess sur round ng said piston, an a r nlet and outletfor sald'recess, saidrecess being constructed to intercept fuel leaking between the piston andcylinden'va'cuum means for conducting air through" said "recess to the intake ,of-the engine, and a mixingdevice in the air outcan a cylinder and iston, a liner for' said cyl-.

inder,'a circuin erential groove around said piston, a co nduit leading from the atmosphere to the carburetor of which Saidcircunr ferential roove is'a art said liner bein be pro- I liquid a fuel that may have escaped pastthe piston j Y rings is caught in the recess mixed with the air passingtherethrough and carried to the internal combustion engine having 4W inder, a piston, a recess in the outer wvallof said piston, air inlet and outlet ports for said recess, means for conduct ng a r from sa d recess outlet to the intake of the engine and a mixing device 1n one of saidportsi I l. An internal combustion engine having a oylinde'riand piston, a liner for said cylinder, a circumferential groove around said piston, a conduit leading from the atmosphere to the carburetor of which said circumferential groove is a part, said liner be '10 Width of the circumferential groove of the 1:

piston. l T V In'testimony whereof, I aflix my signature.

FINLEY n. PORTER. 

